The MBUS (Magpul Back-Up Sight) is a low-cost color injection-molded folding back-up sight. The MBUS Front Sight is adjustable for elevation and fits most 1913 Picatinny-railed hand guards but is specifically tailored to the AR15 / M16 platform.
An elevation adjustment tool is included but most aftermarket A2 front sight adjustment tools may be used as well.
Made in the USA.
